baber/WOPTO huggingface dataset:
Patent GB-1420197-A (GB)
Title: Electrolytic chlorinator
IPC: C25B9/17
Filed: 1971-12-21
Abstract: 1420197 Electrolytic chlorinator MORGAN BERKELEY & CO Ltd 21 Dec 1972 [21 Dec 1971] 59470/71 Heading C7B An electrolytic chlorinator 10 a-d has a base portion 15 for fitting on the inside steel wall 18 of a sea-water inlet conduit 4, 9 of a ship's hull, a plurality (e.g. 6) of elongate vanes 16 extending upwardly from the base portion defining therebetween one or more (e.g. 5) elongate open-ended channels 19 aligned with the sea-water flow through the conduit, and electrolyzing electrodes 22 extending over the major parts of the vane surfaces which bound the channel(s). The channels may be closed at their upper sides by a fixed or removable cover 17. Preferably the electrodes 22 are Ti plates platinized on one side only, alternately folded about the tip or the base of the vanes with the Pt outermost. The vanes may be of plastics (e.g. glass fibre reinforced resin) moulded integrally with the base portion or cover. To prevent electrolytic corrosion of the conduit, guard electrodes (23) Fig. 2c (not shown) of platinized Ti may be provided in the vanes near their ends, insulated from the electrolyzing electrodes and maintained at a positive potential. The potential between the electrolyzing electrodes may also be changed in direction periodically. Alternatively a steady bias current may be supplied thereto. A capacitor timing circuit in which two waveforms are generated is disclosed; the waveforms are combined and applied to a gate transistor which gates HF triggering pulses to the SCRs.
Patent GB-1223038-A (GB)
Title: Improvements in and relating to mechanisms for disengaging the drive of fuel pumps in internal combustion engines
Inventor: ANDERSEN CARSTEN LAAGE ERHARD
IPC: F02M39/00
Filed: 1968-12-16
Abstract: 1,223,038. Reciprocating pumps. BURMEISTER & WAIN'S MASKIN-OG SKIBSBYGGERI AS. Dec.16, 1968 [Dec.22, 1967], No.59711/68. Heading F1A. In a mechanism for disengaging the drive of a F/I pump comprising a rotating cam 2 and a follower e. g. a roller 7 journalled in a follower guide 5 connected to the pump piston and secured to a cam member 25, an arm 24 is pivoted on a shaft 18 from a neutral position 0 to which it is biased by a spring 26 and in which it does not engage the cam member 25 to a first locking position I in which it raises the cam member 25, and subsequently to a second locking position II in the movement of which it is aided by engagement of the follower 7 with the apex of the rotating cam 2. In the first and second locking positions the arm 24 rests in recesses 28, 30 respectively in the under surface of the cam member 25 and in the latter position the follower 7 is lifted completely from the cam 2. The arm is pivoted by a pneumatic ram 13 acting on the arm through a coupling arm 17 on the shaft 18 with a lostmotion coupling comprising a member 19 with radially extending coupling surfaces 20, 21 interacting with opposed surfaces 22, 23 on the hub of the arm 17. When the drive is to be re-engaged, the ram moves the arm 24 in to the first locking position after which the apex of the rotating cam 2 raises the cam member 25 sufficiently for the spring 26 to return the arm to the neutral position. It is stated that the pneumatic ram may be replaced by a hydraulic cylinder or a manually operated lever.
Patent GB-601548-A (GB)
Abstract: 601,548. Two-stroke engines; scavenging. PETERSEN, O. Oct. 5, 1945, No. 26036. Convention date, April 29, 1942. [Classes 7 (ii) and 7 (vi)] A multi-cylinder two-stroke engine, Figs. 1 and 2, using longitudinal scavenging and having its scavenging ports 5 and 6 arranged all around the cylinder 1, has some of its ports 6, which are positioned at the side of the cylinder, of a long section so that they are opened to the cylinder by the passing of the piston early in the last stage of the power stroke and have non-return valves formed by gratings 7 and leaf spring 8 mounted near them and between them and the scavenge air chamber 4 so that exhaust gases do not blow back into the said chamber 4. The remainder of the ports 5 are positioned so near the outer dead centre of the piston stroke that by the time they are uncovered the pressure in the cylinder, due to the opening of the exhaust valve 2 slightly after the ports 6, has dropped below the scavenging air pressure which may be formed by a pump or crank case compression., In a modification, Fig. 4, a chamber 10 is formed which communicates with the chamber 4 only through the non-return valve 14, 15, and a poppet valve in the head of this chamber permits high pressure supercharge air to enter the cylinder late on the first stage of the compression stroke of the engine. An insert 16 may be added to decrease the size of the chamber 10. The timing of the exhaust valve 2 and obviously the scavenge ports 5 and 6 is symmetrical either side of the bottom dead centre of the engine so that it may be run in either direction.
Patent GB-1184009-A (GB)
Title: Magnetic Recording
IPC: G11B5/86
Filed: 1968-12-20
Abstract: 1,184,009. Magnetic recording. INTER. NATIONAL BUSINESS MACHINES CORP. 20 Dec., 1968 [15 Jan., 1968], No. 60554/68. Heading G5R. To produce a magnetic record 12 of width w narrower than that W characteristically produced by a head 8, a record 4 is first made at the width W then transferred using a transfer field 10 of effective width w. In use, a conventional head (24, Fig. 2, not shown) records on an endless belt passing over a storage drum (26) to which the information is transferred by a conventional head (32) with its gap parallel to the track, or by a probe head or by a head consisting of a single lamination. The heads are moved to produce a helical track and pluralities of heads may produce interlaced helical tracks to improve packing density. The belt and drum may be differentially driven to expand or compress the information. The information may be read-out by application of the Kerr effect, or if the drum has a glass substrate with a ferromagnetic coating, magneto-optic read-out may he effected from within the drum.
Patent GB-1378774-A (GB)
Title: Method and apparatus for converting nestable plastics containers into non-nestable container products
IPC: B29C49/00
Filed: 1971-12-30
Abstract: 1378774 Blow-moulding from nestable preforms ILLINOIS TOOL WORKS Inc 30 Dec 1971 [30 Dec 1970] 60772/71 Addition to 1338680 Heading B5A A nestable preform is converted into a non- nestable container by placing it at ambient temperature over a complementarily shaped male mandrel and locking its rim portion thereon, heating it below its rim portion to deformation temperature, placing it with the mandrel in a female mould cavity and expanding it by differential fluid pressure to form a non-nestable container having a rim portion identical with that of the preform. As shown in Fig. 1, the apparatus comprises a rotary turret 30 having eight male mandrels 32 mounted thereon. Nestable preforms 10 are deposited from dispenser 36, the turret 30 indexed to the next position where preform 10 is locked on to mandrel 32 by tamping device 38, blow moulding of the heated preform being effected in blow-mould 34 at a subsequent position of turret 30. The preform 10 has, as shown in Fig. 5, a rolled lip 18 and a bead 20 locking on to ridge 54 on mandrel 32. Mandrel 32 contains a heater 48 insulated from the rim portion of preform 10 by insulating block 42 and ducts 50 to apply or withdraw air. During heating of preform 10, air is withdrawn to retain proper seating of the preform on the mandrel. The female blow-mould 34 is movable toward and away from turret 30 to engage the preform and mandrel therein and comprises a bottom section 64 with a removal plunger 66 and split upper mould sections 68. Mould 34 can be vented during the expansion, for which air is supplied through ducts 50 of mandrel 32. After completion of blow-moulding, blow-mould 34 which is preferably chilled, is removed from the mandrel releasing locking rim 18, mould sections 68 are opened, plunger 66 raised and the product container 24 may be blown therefrom by air jet (72, Fig. 4, not shown). The container may be formed of polystyrene, polyethylene or polyvinylchloride.
Patent GB-1332913-A (GB)
Title: Self-retained bolt assembly
IPC: F16B39/08
Filed: 1970-12-29
Abstract: 1332913 Pivot joints STANDARD PRESSED STEEL CO 29 Dec 1970 [2 Jan 1970] 61523/70 Heading E2F [Also in Division F2] A pivot joint such as a clevis 18 joined to an associated member 24 by a threaded bolt 10, has an additional means other than cotter pin 46 to safeguard against nut 28 separating from the bolt. The bolt has a groove 30 housing a circumferentially-compressible resilient plastics ring 32 which is compressed between the shank of the bolt and the wall of a counterbore (40) in the nut to lock the nut to the bolt. The ring is preferably divided and formed from a polyamide, polyethylene, polypropylene or P.T.F.E.  . Reference has been directed by the comptroller to Specification 1152880.
Patent GB-645060-A (GB)
Abstract: 645,060. Knitting-machines. HEMPHILL CO. July 18, 1947, No. 19325. Convention date, June 25, 1940. [Class 74 (ii)] A bevelled projection 25 adjacent to the eye 24 of a yarn guide 11 (which may feed elastic yarn) projects under the needle hooks and beneath their path and so pushes the yarn y against the shanks of the passing needles which are to link it, the hooks and latches of these needles passing respectively above and below it. The yarn guide is fixed to a lever 12, urged into feeding position by a spring 15 and removed therefrom finally by a mastercontrolled link 16, or periodically (as when feeding to spaced courses) by a tappet 21 and levers 20, 17,-14. An adjustable stop 22 limits the swing of the guide to a particular feeding position. The lever 12 is pivoted on a spindle 5, on which is also pivoted a carrier ring 4 bearing yarn guides at 7. Specification 20101/09, [Class 74], is referred to.
Patent GB-719593-A (GB)
Abstract: 719,593. Firegrates. SMITH & WELLSTOOD, Ltd. Aug. 5, 1953, [Aug. 30, 1952.] No. 21870/52. Class 126. A grate 1 is mounted for rectilinear movement on bearing discs 2 integral with or secured to short stems 3 which rest in open-topped grooves formed in brackets 5 projecting from the walls 6 of the ashpit, and grooves formed in the ashpit walls 6.
Patent GB-738556-A (GB)
Abstract: 738,556. Preserving biological material. LITTLE, Inc., A. D. Dec. 5, 1953, No. 33897/53. Class 49. Biological materials such as vaccines, sera, enzymes, hormones, moulds, bacteria and tissues for transplanting are preserved and stored by applying superatmospheric pressure to the material, cooling to below the normal freezing point, and maintaining, during the cooling, and thereafter while the material remains at a temperature below the normal freezing point, sufficient pressure to prevent formation of ice I. The material may be cooled to below -20‹ C. and subjected to pressure above 2000 atmospheres in order to effect formation of ice II, a non-expanding ice which does not disrupt cells. When employing the procedure described with reference to the drawing, the material 16 is sealed in a watertight flexible envelope 17, the envelope is placed in a pressure-resistant container 10, the free space of the container is completely filled with water 19, a cover 11 is bolted tightly on to the container, and the assembly is subjected to the cooling. ; freezing of the water 19 sets up pressure in the container, and at - 20‹ C. the pressure has risen to 2000 atmospheres without freezing of the biological material 16.
Patent GB-2023426-A (GB)
Title: Intrauterine contraceptive devices
IPC: A61F6/14
Filed: 1978-06-19
Abstract: The present invention is directed towards the provision of an intrauterine contraceptive device which can be easily located properly and comfortably in the uterus with minimal risk of unintentional expulsion but which at the same time will conform to variations in uterine shape and be relatively easily removable. The device comprises a flexible member having a central portion 30, first and second upper arms 14, 20 extending outwards and around from the central portion substantially in a common plane, and at least one lower arm extending downwards, outwards and around from the central portion, said lower arm being sufficiently flexible to straighten in response to its distal end being pulled downwards. Preferably two such lower arms 16, 22 are provided and filaments 28 connected to each said arm permit removal of the device from the uterus. <IMAGE>
Patent GB-2000887-A (GB)
Title: Electronic timepiece with mixed time setting
IPC: H02P8/02
Filed: 1978-06-23
Abstract: An electronic timepiece having an analog display including a time setting mechanism for correction of the hour hand independently of the other hands including an auxiliary circuit for supplying a rapid frequency train of pulses to a step motor for displacing a train of gear wheels by an amount equivalent to a complete turn of the second hand.
Patent GB-2002317-A (GB)
Title: Material compacting apparatus
IPC: B30B9/30
Filed: 1978-08-01
Abstract: An apparatus for compacting material in a container (22) comprising a ram (16) mounted for reciprocable movement in a charge box (12), and a breaker bar (24) which extends across the charge box with spacing above the ram when the latter is in its extended position, is characterised by a blade which is movable to an operative position in which it substantially closes the space between the breaker bar and the top of the ram during final compaction of the material by the ram. <IMAGE>
Patent GB-2014088-A (GB)
Title: Ink ribbon feeding
IPC: B41J33/28
Filed: 1978-08-07
Abstract: In a printer with mobile printing head the inking ribbon which is stored in a cassette (12) arranged in a plane parallel to the printing line and extending along the complete length of the frame of the printer, is driven by the motor (8), which advances the carriage bearing the said printing head, by means of gearing (19-20) and of a free wheel (22), in such a way as to obtain a unidirectional ribbon drive. <IMAGE>
Patent GB-2004144-A (GB)
Title: Overcurrent protection
IPC: H02H3/093
Filed: 1978-09-05
Abstract: An inverse time lag over-current release arrangement for an electrical distribution system, especially one operating at a voltage of 1000v A.C. or 1200v D.C. maximum, incorporates means for deriving a d.c. control voltage proportional to the current I and for applying said voltage to a capacitor charging circuit, means for causing the capacitor to charge only when the current flow exceeds a set value Is, and a level detector arranged to generate a tripping signal when the voltage across the capacitor reaches a selected level, with the time taken for the tripping signal to be generated being given by   <IMAGE>  where k is a constant within the range 20 to 120 and   <IMAGE> lies within the range 1 to 8.
Patent GB-2004570-A (GB)
Title: Twisting Strands
IPC: D02G3/28
Filed: 1978-09-11
Abstract: An apparatus for twisting a fibre strand to have repeated along its length alternating zones of opposite twist comprises a fluid vortex device having two fluid inlets and a valve controlling fluid flow to the inlets. The valve comprises a hollow cylindrical rotatable valve member and a sleeve having a number of outlet ports surrounding the member. Fluid supplied to the hollow member is distributed to the outlet ports by rotation of the member. Plastics dry bearings between the member and the sleeve act to prevent improper flow of air along the abutting surfaces. The vortex device comprises a member forming a bore, the bore having a wide port into which the inlets inject the fluid and a restricted port forming a venturi of diameter of the order twice that of the yarn. A plug through which the yarn passes at the end of the bore remote from the venturi inhibits escape of air from that end. Two of the twisted strands may be brought together to form a self-twist yarn.
Patent GB-2006260-A (GB)
Title: Process for preparing aromatic hydrocarbons
IPC: C07C1/04
Filed: 1978-10-16
Abstract: Process for preparing aromatics from carbon monoxide and hydrogen. A mixture whose H2/CO molar ratio is less than 1.0, is contacted with a trifunctional catalyst containing at least one metal catalyzing the conversion of a H2/CO mixture into hydrocarbons and/or oxygen- containing hydrocarbons, at least one metal catalyzing the water gas shift reaction and a crystalline aluminosilicate zeolite having an SiO2/Al2O3 molar ratio of at least 12 and a constraint index between 1 and 12. The "constraint index" is an empirical value based on the relative sorption by the zeolite of n-hexane and 3-methylpentane in a defined experimental procedure.
Patent GB-2029183-A (GB)
Title: Rotary soil cultivator with protective plate
IPC: A01B33/06
Filed: 1978-12-01
Abstract: A soil cultivating implement comprising a plurality of soil working members (6) that are rotatable about the axes of corresponding non-horizontal shafts (5), the shafts (5) being rotatably supported in a row from a hollow box-section frame (1). Denting or other damage to a lower part (2) of the frame (1) and damage to drive transmission members (5, 26) contained inside the frame (1) is greatly reduced when working in stony ground by the provision of at least one protective plate (17) that is releasably arranged between the bottom part (2) of the frame (1) and the rotary soil working members (6). Guide ribs (19) are arranged on the downwardly facing surface of the or each protective plate (17) to act as scrapers that will guide any stone or the like jammed between the protective plate (17) and a shield plate (10) of one of the soil working members (6) outwardly away from the corresponding shaft (5) to a position where it will be released. <IMAGE>
Patent GB-2012392-A (GB)
Title: Piston Rings; Lip Type Seals
IPC: F16J15/32
Filed: 1979-01-02
Abstract: A sealing ring which has an annular part 36 from which extend inner and outer lips 40, 38. The sealing ring is mounted between the cylindrical surface of a bore and a piston slidable in said bore. The outer cylindrical surface (50) of the annular part 36 is normally slightly remote from the surface with which the outer lip sealingly cooperates. The annular part 36 is deformable so that the outer cylindrical surface (50) can come into sealing contact with the above mentioned surface, in order to improve fluid tightness. <IMAGE>
Patent GB-2017173-A (GB)
Title: Apparatus for Supporting the Tubular Fabric in Circular Looms
IPC: D03D33/00
Filed: 1979-03-15
Abstract: Tubular fabric 6 woven on a circular loom is supported by at least one internal supporting ring member 7 comprising an arcuately curved elongate member 8 provided with a plurality of rollers 23. The rollers 23 either make direct contact with the inside of the fabric or by way of a tube shrouding the rollers. <IMAGE>
Patent GB-2047299-A (GB)
Title: Building structures
IPC: E04B1/18
Filed: 1979-04-26
Abstract: A building structure, such as a covered walkway or bus shelter, has at least one side wall formed from fixed upright elongate elements (2) and panels (12) secured between adjacent such elements and can be constructed on a modular basis. Roof elements (4) may be secured to cross-beams (3) at the top ends of the elements (2) and rain water outlets (10) in the roof elements (4) may discharge to top ends of channel- shaped said elongate elements (2). <IMAGE>
Patent GB-2025773-A (GB)
Title: Dust Masks
IPC: A41D13/11
Filed: 1979-05-02
Abstract: The invention provides a dust mask comprising a sheet of filter material centrally folded in the horizontal direction to form a pocket comprising upper and lower opposed faces (14) (16), a horizontal pleat (18) essentially central to said opposed faces and at least one additional horizontal pleat (20) (22) in each of said opposed faces, a deformable strip (28) extending at least partially across the upper opposed face (14) and capable of conforming to the nasal contour of the wearer; and attachment means (32) for releasably securing the mask upon the face of the wearer. <IMAGE>
Patent GB-2019020-A (GB)
Title: Determining Exposure
IPC: G03B27/72
Filed: 1979-05-09
Abstract: In a projection printer for producing half-tone reproductions of copy, an image 92 of the copy is projected, and light probes 88, 90 placed on highlight and shadow regions of the image. These give readings on meters 94, 96, which are calibrated by means of potentiometers 98 in terms of percentage dot areas produced by a given half-tone producing screen. Further potentiometers for other screens can be selected by switches 99. The exposure mechanism of the printer is adjusted until the readings on the meter show the desired maximum and minimum dot densities. Other features are also described including a copyholding magazine (Figs. 2 and 3 not shown); a mask with openable doors to select the area of a piece of photographic material to be exposed (Fig. 4 not shown); and a means for automatically adjusting the magnification of the image in accordance with recorded information associated with the copy (Fig. 9 not shown). <IMAGE>
Patent GB-2028455-A (GB)
Title: Multi-functional Climbing Chock
IPC: F16G11/00
Filed: 1979-05-18
Abstract: A chock device as used in rock climbing, is wedge shaped for jamming in a variety of cracks or fissures in the rock face, and comprises a rigid body comprising three mutually parallel spaced bars 1, 2,3 of common length adjoining orthogonally at their ends with a pair of tapered flanks 4 carrying profiled ends. The centre bar 2 locates and supports a sling 5. <IMAGE>
Patent GB-2031114-A (GB)
Title: Radial impellers for fans
IPC: F04D23/00
Filed: 1979-06-14
Abstract: A radial impeller for fans or blowers for conveying clean or dust- laden gases has blades (2) arranged continuously between impeller side plates (1) to form an impeller crown (3). The outside diameter of a central drive hub element (4) is smaller than the mean intake diameter (d1 m) of the blades. An elastic part (5) is provided between the impeller crown and the drive hub element. In use, adhesion of dust and wear by dust may give rise to a resulting imbalance causing radial displacements of the impeller crown. The elastic part (5) serves to transmit torque and to cushion the radial displacements so as to minimise transmission of such vibration to the bearings and drive shaft. <IMAGE>
Patent GB-2026035-A (GB)
Title: Electrolytically cleaning wire
IPC: C25F1/00
Filed: 1979-07-11
Abstract: In the manufacture of an insulated electric wire, a conductor 2 is drawn through an electrolytic cleaning bath 3 containing an electrolytic cleaning liquid and an electric current at the current density of 0.1 mA/mm<2> to 59 mA/mm<2> is passed between the conductor 2 and an electrode 5 immersed in the cleaning liquid. The conductor 2 then passes through a paint coating device 9 where a layer of insulating paint is applied to the conductor 2 and then through a furnace 10 where the paint layer is baked. <IMAGE>
Patent GB-2033161-A (GB)
Title: Improvements in or relating to reflector antennae
IPC: H01Q15/00
Filed: 1979-07-23
Abstract: A reflector antenna comprising a reflector system, and a feed system, eg a log-periodic feed system (1) the phase-centre of which moves with frequency, for illuminating the reflector system to produce a substantially focussed antenna beam. To compensate for frequency variations in the position of the phase-centre of the feed system, the reflector system includes a frequency dependent reflector (2) the effective surface of reflection of which (6a-6e) varies with frequency to cause the focus of the reflector system to move with the phase-centre of the feed system. A number of different forms of suitable frequency dependent reflectors are described, employing composite arrangements of frequency selective mesh or grid reflector elements, or arrays of reflecting horns or wedges. <IMAGE>